Robert, thank you for your post. You suggest a cable with characteristic impedance about the same as the amp's output impedance. My understanding is that this will minimize standing waves and reflections. To achieve ~4ohm Zo the cable would have high(ish) capacitance IF a goal was to keep inductance very low. My understanding is that it is very important to keep inductance low with high efficiency speakers to minimize energy storage in the cable. My understanding is that higher capacitance affects some solid state amp's more (instability and oscillation) but not so much zero feedback SET amps, but that high capacitance may cause HF rolloff. Do I have this straight? What would be the max capacitance you would match with zero feedback SET and high efficiency speakers?
